Goodwill and Other Intangibles, Net - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Disposal Group, Including Discontinued Operation, Goodwill		$ 400	$ 200
Intangible Assets, Net (Excluding Goodwill)	$ 102,006	96,405
Amortization	2,500	1,900	2,100
Impairment of Intangible Assets (Excluding Goodwill)		$ 600	$ 2,000
Home-based services [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Net (Excluding Goodwill)	69,400
Hospice Entity [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Net (Excluding Goodwill)	23,700
Community-Based Services [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Net (Excluding Goodwill)	7,400
Facility-based services [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Net (Excluding Goodwill)	$ 1,500